If you see these clouds in the sky, which type of weather might you expect?

fog
no precipitation
heavy rain or snow
thunderstorms

For the given question above, it depends on what type of cloud you are referring to. Here are the details of the physical appearance of the cloud and its corresponding weather:

Black cloud - with low temperature - heavy snow
Grey Cloud - with low temperature - light snow
Black cloud - average/ hot temperature - thunder and lightening storm
Grey cloud - average - rain
grey / black cloud - average / cold - hail stones / sleet

I hope this helps.

Answer steam fog;

A